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Diagnosis Procedure

  1. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect video distributor connector and front display unit connector.
    3. Check continuity between video distributor harness connector and front display unit harness connector.
      TERMINAL CONTINUITY REFERENCE TABLE

      Video distributor Front display unit Continuity
      Connector Terminals Connector Terminals
      M98 8 M75 15 Existed
      6 5
    4. Check continuity between front display unit harness connector and ground.
      TERMINAL CONTINUITY REFERENCE TABLE

      Front display unit Ground Continuity
      Connector Terminal
      M75 15 Not existed

      Is the inspection result normal? 

      YES: GO TO  2.

      NO: Repair harness or connector.

  2. CHECK COMPOSITE IMAGE SIGNAL 
    1. Connect video distributor connector and front display unit connector.
    2. Turn ignition switch ON.
    3. Check signal between front display unit harness connector using an oscilloscope.
      TERMINAL CONNECTOR REFERENCE TABLE

      (+) (-) Condition Reference value
      Front display unit Front display unit
      Connector Terminal Connector Terminal
      M75 15 M75 5 When AUX, DVD or camera image is displayed on front display unit.
      G04890020Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: Replace front display unit.

      NO: Replace video distributor.

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